Sutro Biopharma, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Equity Inventive Plans, Employee Stock Purchase Plan and Stock-Based Compensation - Summary of Option Activity (Details)

v3.19.1

Equity Inventive Plans, Employee Stock Purchase Plan and Stock-Based Compensation - Summary of Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding Options Exercised		(210,000)
2004 and 2018 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding Options, Beginning Balance	3,111,718
Outstanding Options Granted	777,350
Outstanding Options Exercised	(8,347)
Outstanding Options Canceled	(5,807)
Outstanding Options, Ending Balance	3,874,914	3,111,718
Weighted - Average Exercise Price, Beginning Balance	$ 13.74
Weighted - Average Exercise Price, Granted	10.50
Weighted - Average Exercise Price, Exercised	5.08
Weighted - Average Exercise Price, Canceled	14.93
Weighted - Average Exercise Price, Ending Balance	$ 13.11	$ 13.74
Weighted - Average Remaining Contract Term	8 years 9 months 7 days	8 years 9 months 3 days
Aggregate Intrinsic Value, Balance	$ 2,450	$ 1,088

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Number of options outstanding, including both vested and non-vested options.

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